I like the Grand a lot, great bank to run along. But yeah, not much rigging area. Not sure about parking in a designated trailer area, boaties can get very agro about that type of stuff. Could be treacherous on an outgoing tide if you broke something, as you'd go out to sea.
There are road works along Marine Parade, expect 20 minute delays. Best to drive inland one major street if travelling north/south (it's all a grid).
Had *great* sail at Shearwater. 40 minutes and dry hair. I timed runs to each side at approx 1 minute, so that's a lot of gybes in a row, quite a few planing. Oversheeting some, powered through others, progress feels good. Do'nt mean to brag but

. I think it was the 20 minute cat-nap I had just before.